Schottky Diodes

A Schottky diode, also known as a hot carrier diode, is a semiconductor diode which has a low forward voltage drop and a very fast switching action. There is a small voltage drop across the diode terminals when current flows through a diode. A normal diode will have a voltage drop between 0.6 to 1.7 volts, while a Schottky diode voltage drop is usually between 0.15 and 0.45 volts. This lower voltage drop provides better system efficiency and higher switching speed. In a Schottky diode, a semiconductor–metal junction is formed between a semiconductor and a metal, thus creating a Schottky barrier. The N-type semiconductor acts as the cathode and the metal side acts as the anode of the diode. This Schottky barrier results in both a low forward voltage drop and very fast switching.

Topdiode offers different kinds of Schottky diode as below

Surface-mount Schottky Diodes SMD

Rectifier Diode

A rectifier diode lets electrical current flow in only one direction and is mainly used for power supply operation. Rectifier diodes can handle higher current flow than regular diodes and are generally used in order to change alternating current into direct current. They are designed as discrete components or as integrated circuits and are usually fabricated from silicon and characterized by a fairly large P-N-junction surface. This results in high capacitance under reverse-bias conditions. In high-voltage supplies, two rectifier diodes or more may be connected in series in order to increase the peak-inverse-voltage (PIV) rating of the combination.

Standard rectifiers can be found regulating the power in computers, battery chargers for rechargeable batteries, computer power supplies and vehicle batteries. Also, while rectifier diodes are often used for AC to DC conversion, diodes with rectifying characteristics are found in other uses than in electronics

General Purpose Rectifier Diode

Switching Diode

Switching diodes are a single p-n diode in a discrete package. A switching diode provides the same functionality as a switch. It has high resistance below the specified applied voltage similar to an open switch, whereas above that voltage it changes in a sudden way to the low resistance of a closed switch. Switching diodes are designed to rectifier high frequency signals. Sometimes they are termed fast switches because of their capability to change status from forward to reverse quickly.

The switching diode is the most basic function of almost every electronic application. We offer below switching diodes:

Small Signal Switching Diode

Silicon Epitaxial Planar Switching Diode

Zener Diode

A Zener diode is a type of diode that permits current not only in the forward direction like a normal diode, but also in the reverse direction if the voltage is larger than the breakdown voltage known as "Zener knee voltage" or "Zener voltage".

Topdiode supplies zener diodes for voltage regulation circuits as bellow:

TVS Diode & Diacs

Trigger Diode

Trigger Diode Bi-directional Trigger Diodes (also known as Diac) is a diode that conducts current only after its breakover voltage has been reached momentarily. Functioning as a trigger diode with a fixed voltage reference, the DB3/DB4/LLDB3 series can be used in conjunction with triacs for simplified gate control circuits or as a starting element in fluorenscent lamp ballasts.

Topdiode offer below TVS diodes

Bi-directional Trigger Diode

TVS Diode

The Transient Voltage Suppressor diode (also known as a TVS Diode) is a protection diode designed to protect electronic circuits against transients and overvoltage threats such as EFT (electrically fast transients) and ESD (electro-static discharge). TVS Diodes are silicon avalanche devices typically chosen for their fast response time (low clamping voltage), lower capacitance and low leakage current. Topdiode offer below TVS diodes

Transient Voltage Suppression Diode (TVS Diode)

Transient Voltage Suppression Diode (SMT Type)

Bridge Rectifier

A bridge rectifier is an arrangement of four or more diodes in a bridge circuit configuration which provides the same output polarity for either input polarity. It is used for converting an alternating current (AC) input into a direct current (DC) output. A bridge rectifier provides full-wave rectification from a two-wire AC input, therefore resulting in lower weight and cost when compared to a rectifier with a 3-wire input from a transformer with a center-tapped secondary winding.

The most common sizes for maximum average rectified current are 1A, 1.5 A, 4 A, 25 A and 35 A. Topdiode has a full selection of bridge rectifier, both through-hole type and SMD bridge rectifier.

Through-hole Bridge Rectifier (THT type)

Surface Mount Bridge Rectifier (SMT type)

Fast Recovery Diode

Rectification is the most popular use for diodes. Fast rectifiers convert alternating current (AC) to direct current (DC). They only allow one-way flow of electrons. Rectifiers have many uses and are often found serving as components of high-voltage direct current power transmission systems and DC power supplies. Fast rectifier diodes feature very low reverse recovery time, very low switching losses and low noise turn-off switching.

There are several different kinds of fast rectifiers in Topdiode.

Fast Recovery Diode